Describe 'Validate-MarkdownFrontmatter.ps1' {
    Context 'YAML Extraction' {
        It 'Should extract frontmatter from valid markdown' {
            $content = @"
---
title: Test
description: Test description
---
# Content
"@
            $result = Get-Frontmatter -Content $content
            $result.title | Should -Be 'Test'
        }

        It 'Should handle missing frontmatter' {
            $content = '# No frontmatter'
            $result = Get-Frontmatter -Content $content
            $result | Should -BeNullOrEmpty
        }

        It 'Should handle malformed YAML' {
            $content = @"
---
title: Test
  bad-indent: value
---
"@
            { Get-Frontmatter -Content $content } | Should -Throw
        }
    }

    Context 'Schema Selection' {
        BeforeAll {
            # Load schema mapping
            $schemaMapping = Get-Content 'scripts/linting/schemas/schema-mapping.json' | 
                ConvertFrom-Json
        }

        It 'Should select instruction schema for .instructions.md' {
            $schema = Get-SchemaForFile -Path 'test.instructions.md'
            $schema | Should -Match 'instruction-frontmatter'
        }

        It 'Should select prompt schema for .prompt.md' {
            $schema = Get-SchemaForFile -Path 'test.prompt.md'
            $schema | Should -Match 'prompt-frontmatter'
        }

        It 'Should fall back to base schema for unknown types' {
            $schema = Get-SchemaForFile -Path 'random.md'
            $schema | Should -Match 'base-frontmatter'
        }
    }

    Context 'Schema Validation' {
        It 'Should pass valid instruction frontmatter' {
            $frontmatter = @{
                description = 'Test description'
                applyTo = '**/*.ps1'
            }
            $result = Test-FrontmatterSchema -Data $frontmatter -SchemaType 'instruction'
            $result.IsValid | Should -BeTrue
        }

        It 'Should fail instruction frontmatter missing required fields' {
            $frontmatter = @{
                title = 'Missing description and applyTo'
            }
            $result = Test-FrontmatterSchema -Data $frontmatter -SchemaType 'instruction'
            $result.IsValid | Should -BeFalse
            $result.Errors | Should -Contain '*description*'
        }
    }
}

$TestCases = @(
    @{
        Name = 'Valid docs frontmatter'
        Content = @"
---
title: Getting Started
description: How to get started with the project
ms.date: 2025-01-15
---
"@
        SchemaType = 'docs'
        ExpectedValid = $true
    }
    @{
        Name = 'Invalid date format'
        Content = @"
---
title: Test
description: Test
ms.date: 01/15/2025
---
"@
        SchemaType = 'docs'
        ExpectedValid = $false
    }
)